<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件绑定</title>
</head>
<body>
<div id="div">
    <img v-bind:src="imgUrl">
    <img :src="imgUrl">
    <br>
    <button type="button" onclick="changeImg()">随机切换图片</button>
</div>
</body>
<script src="js/vue.js"></script>
<script>
    let vue=new Vue({
        el:"#div",
        data:{
            imgUrl:"img/01.jpg"
        }
    });
    let imgs = [
        "img/01.jpg",
        "img/02.jpg",
        "img/03.jpg",
        "img/04.jpg",
        "img/05.jpg",
        "img/06.jpg",
        "img/07.jpg",
        "img/08.jpg",
        "img/09.jpg",
        "img/10.jpg"];
    function changeImg(){
        //需求：每次点击按钮之后都随机切换一张图片
        //1 随机生成一个索引[0,9]整数   Math.random()*10-->[0,10)
        let index = Math.floor(Math.random()*10);
        //2 根据索引取出图片，赋值给imgUrl变量
        vue.imgUrl=imgs[index];
    }
</script>
</html>